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Recognised as Colour

#2B3A66

  • #2B3A66
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2B3A66 is a blue with RGB values 43, 58, 102 and HSL 225°, 41%, 28%. It is a dark colour, so white text on it reaches 11.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2B3A66#2B3A66
HEX#2B3A66
RGBrgb(43, 58, 102)
RGB (0–1)0.1686, 0.2275, 0.4
RGB percentages16.9%, 22.7%, 40%
HSLhsl(224.7, 40.7%, 28.4%)
HSV / HSBhsv(224.7, 57.8%, 40%)
CMYK57.8%, 43.1%, 0%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,832,998
CSS custom property--colour: #2B3A66;

Brightness & contrast

Relative luminance0.04499WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.05:1
Contrast with white11.05:1WCAG normal text: AAA
Contrast with black1.9:1WCAG normal text: Fail
Greyscale equivalent#3A3A3A
Inverted#D4C599

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#283F68no red cones; affects about 1% of men; ΔE 3.9 from the original
Deuteranopia#213965no green cones; the most common form, about 1% of men; ΔE 2.4 from the original
Tritanopia#0B444Bno blue cones; rare, and affects men and women equally; ΔE 29.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.05:1WCAG large text: AAA
Contrast with black, large text1.9:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 23.4Steel blue · ΔE 30.2Dark slate grey · ΔE 31.9Midnight blue · ΔE 33.3Slate grey · ΔE 34.2Dim grey · ΔE 34.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 23.42, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#66572B
Analogous#2B5766, #3A2B66
Triadic#662B3A, #3A662B
Split complementary#663A2B, #57662B
Tetradic#662B57, #66572B, #2B663A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8E9ECF
Lighter +30%#6A80C0
Lighter +20%#4963AE
Lighter +10%#3A4E8A
Darker −10%#1C2642
Darker −20%#0D111E
Darker −30%#000000
Darker −40%#000000
More saturated +25%#193178
Less saturated −25%#3D4354

Channel breakdown

R43
G58
B102
Red43 (16.9%)
Green58 (22.7%)
Blue102 (40%)
Hue224.75°
Saturation (HSL)40.69%
Lightness28.43%
Dominant channelBlue
Hex per channelR 2B · G 3A · B 66

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Every value on this page was computed from “2b3a66” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.